She was told that in around 1797, Richard stabbed and tortured two men in his hometown in Ireland.

Who Do You Think You Are?: Big Brother host Emma is appearing in an upcoming episode of the BBC series [BBC/Wall to Wall/Steve and Cathy Griffiths]

Who Do You Think You Are?: On the show, Emma discovered her ancestor was a murderer [BBC/Wall to Wall/Paul Gebhard]

According to The Sun, Protestant Richard broke into the home of Catholic Michael Egan and his son Thomas, located in Dunlavin, Co Wicklow, and repeatedly stabbed them both with a knife.

Upon hearing the devastating news, Emma said: "That’s horrific. How can you defend doing that to somebody?".

And now the mum of three has revealed how she really feels about the revelation.

Speaking to TV Times ahead of the episode airing, Emma revealed: "I feel awful talking about somebody I don't know and saying he didn't seem like a nice man, because we don't know what life was like then.

Who Do You Think You Are?: Emma has admitted she was left "upset" by the revelation [Channel 5]

"You think 'Am I being dramatic because it was 200 years ago?'

"But it is still your bloodline and I felt I should apologise to the people that lived in that area. It was horrible and and I was upset by it."